Perhaps you should try some spelling variations:
wang xiaotong » wang xiaodong, wang xianodong, wang xiaoping
ghana china » china china, ghana ghana
hang china » han china, change china, kong china
yin fang » yin hang, yin yang, chin fang
fang jie » yang jie, tang jie, fang ke
jie dang » jie zhang, vie dans, bie dans

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: wang xiaotong ((hang china) OR (ghana china)) yin fang jie dang (hai OR hadi) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang xiaotong ((hang china) OR (ghana china)) yin fang jie dang (hai or hadi) ;~".
• Adding a wildcard symbol may retrieve word variants: wang xiaotong ((hang china) OR (ghana china)) yin fang jie dang (hai or hadi) ;*.